How severe is CVE-2025-67748?

CVE-2025-67748 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-67748 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67748?

CVE-2025-67748 affects Trailofbits Fickling. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-67748?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-67748 have an EU (EUVD) identifier?

Yes. CVE-2025-67748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203478.

When was CVE-2025-67748 published?

CVE-2025-67748 was published on 2025-12-16 and last updated on 2026-06-17.

CVE-2025-67748

CVE-2025-67748 is a high-severity vulnerability in Trailofbits Fickling with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 7.1
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-203478
Weakness: CWE-94
Affected product: Trailofbits Fickling
Published: 2025-12-16
Last modified: 2026-06-17

Description

Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports. This led to unsafe pickles based on `pty.spawn()` being incorrectly flagged as `LIKELY_SAFE`, and was fixed in version 0.1.6. This impacted any user or system that used Fickling to vet pickle files for security issues.

Frequently asked questions

What is CVE-2025-67748?: Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 had a bypass caused by `pty` missing from the block list of unsafe module imports. This led to unsafe pickles based on `pty.spawn()` being incorrectly flagged as `LIKELY_SAFE`, and was fixed in version 0.1.6. This impacted any user or system that used Fickling to vet pickle files for security issues.
How severe is CVE-2025-67748?: CVE-2025-67748 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-67748 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67748?: CVE-2025-67748 affects Trailofbits Fickling. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-67748?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-67748 have an EU (EUVD) identifier?: Yes. CVE-2025-67748 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203478.
When was CVE-2025-67748 published?: CVE-2025-67748 was published on 2025-12-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:trailofbits:fickling:*:*:*:*:*:*:*:*

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